7+-3u=31

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Solution for 7+-3u=31 equation: 


Simplifying
7 + -3u = 31

Solving
7 + -3u = 31

Solving for variable 'u'.

Move all terms containing u to the left, all other terms to the right.

Add '-7' to each side of the equation.
7 + -7 + -3u = 31 + -7

Combine like terms: 7 + -7 = 0
0 + -3u = 31 + -7
-3u = 31 + -7

Combine like terms: 31 + -7 = 24
-3u = 24

Divide each side by '-3'.
u = -8

Simplifying
u = -8

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